Control device



' H. FER ESTER.v

' CONTROL DEVICE.

APPLICATION FILED SEPT. 18', 1919'.

Patented Oct. 18, 1921.

w W I w \wm m m INVENTOR A TTORNEYS UNITED STATES HENRY FERESTER, OF BROOKLYN, NEW YORK.

CONTROL DEVICE.

Application filed September 18, 1919.

To all whom elf-may concern:

Be it known that I, HENRY F nnns'rnn, citizen of the King of Roumania, and resident of Brooklyn, in the county of Kings and tate of New York, have invented certain new and useful Improvements in Control Devices, of which the following is a specification.

This invention relates to controlling or tripping devices for electrical and mechani cal machinery, and has for its object to pro vide such a device which can be readily operated by one positioned at a distance from the device, whereby my invention is a means of saving both time and labor.

Another object of my invention is to provide a control device, operable at a distance, for controlling the reciprocating action of a lever, rod, punch, drill, or the like such as are used on milling machines, drill presses, and the like.

The above and other objects will become apparent in the description below, in which characters of reference refer to like-named parts on the drawings.

Referring briefly to the drawings, Figure 1 is a plan view of my device.

Fig. 2 is a side elevational view of the same.

Fig. 3 is a plan view of a modification of the device shown in the above figures.

Fig. 4: is a perspective view of the same.

Referring now. in detail to the drawings, the numeral 1 represents'the frame or bed plate of my device, the same being provided with vertical end pedestals or supports 2 and 3. Said supports contain bores or bearings for the shaft 6, said bores being surrounded, outside the support, with tapering collars &. The cross-section of said shaft 6 is of different forms at different parts of its length. The same is circular at the left of the figure, square at 7 about the center, square again at the right of said section 7, at 9, but displaced 90 degrees from the square of said section 7, and finally circular again so that the shaft may lie in the bearing in the support 3.

A flange 8' is rigid to said shaft at the dividing line between the sections 7 and 9. A similar flange 8 is rigid to the inside of the support 3, surrounding the bore in said support. A strong coiled spring 10 surrounds said shaft between said flanges 8. The right Specification of Letters Patent.

Patented Oct. 18, 1921.

Serial No. 324,649.

hand end of said shaft is provided with a collar and eye 12.

A rectangular pocket or slot 17 is cut at the central portion of the upper part of sec tion 7 of said shaft. A finger 18 projects into said pocket so the transverse motion of said finger will impart longitudinal motion to said shaft. Said finger 18 is rigid to and part of a prong or lever 13 which is pivoted on a pin 14, the latter being surrounded by a sleeve 15 and supported in the frame 5. Said frame 5 is secured to the base of the bed plate 1 by means of bolts or rivets 19. The lever 13 is provided with an, eye or hole 20. A second lever 18. similar to said lever 13, is integral with the latter and provided with a similar eye. Said levers 18 and 13 are 1nutually displaced at an angle of SO'degrees.

The operation of the device is now apparent, and is as follows: Strings of cord or wire 22 is inserted into each of the holes 20 and 21, the other ends of said strings being located near the operator of the machine. As an example, assume that a tripping bar is attached to the eye 12, and that said bar controls the descent of the drill of a drill press. The only operation needed to control the above is reciprocation ofsaid bar. Pulling either of the strings will cause the shaft 6 to move against its spring, and releasing the string will allow it to return. It is apparent that, by use of the double lever l313, my device may be operated from nearly any part of the room, for, when the lever 13 is inoperative because the string therein is in line with said lever, then the lever 13 will be operative, and vice versa.

My device may also be operated bya footcontrolled mechanism or linkage, so that a single depression by the foot will actuate the device as above described. This is of especial value in the case of drill presses or the like, where I make my said linkage pass around the side of the mouth of the press so that the same does not interfere with the operation of the press and the insertion of and removal of working material from the press.

In Figs. 3 and 1 I have shown a form of my device which is useful on machines at present controlled by electromagnets, instead of by hand, as in my above described device. Frequently the electromagnets burn out, or the electrical system fails in some way, so that the machine must remain idle until necessary repairs are made. My last mentioned device eliminates this loss of time in case the electromagnet becomes inoperative.

In this device 22 represents the main beam or member having slots 29 therethrough near the ends, and a hole adjacent the right hand Slot 29. Pins, or the shanks of bolts, 28, pass through said slots and hole, those through the slots being rigid to L members 2i and 25, respectively, and that through the hole being rigid to the rocking lever 26. The member 22 is bent upward at the left so as to provide a support, properly carved out at the top, for the reception of the core of the electromagnet which has become inoperative, and which my device will replace. The bracket or L members 24 and 25 are attached to a suitable Wall or the like by means of screws through the holes 27. The member 22 is provided with an end eye 32.

Now it is apparent that, when the strings attached to the complementary arms of the member 26, aresituated near the operator of the machine, at whatever distance from the machine, the operator can, by pulling either of the strings, cause the member 22 to move longitudinally a suiiicient distance to operate the machine as described in the first part of this specification. Since the burnt out electromagnet is always provided with a spring similar to the spring 10, said magnet will upon release of the string return to its normal position.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is as follows:

1. In a deviceof the class described, a supporting member, a bar resiliently slidable longitudinally therein, means for actuating said bar comprising a pair of complementary arms fulcrumed at or near their point of intersection, and a member projecting from said point and engaging said bar.

2. In a device of the class described, a supporting member, a resilient member slidable therein, a bracket rigid to said supporting member, means for actuating said resilient member comprising a pair of complementary arms fulcrumed at or near their point of inte section to said bracket, and a member projecting from said pointand engaging said member.

8. In a device of the class described, a

supporting member, a resilient member slidable therein, means for actuating said resilient member comprising a pivoted sector having a plurality of eyes or the like, and a member projecting from said sector and en gaging with said resilient member.

4L. In a device of the class described, a supporting member, a resilient member slidable therein comprising a shaft having a central portion of square cross-section and a pair of spaced-apart flanges, one of said flanges being rigid to said shaft and the other being rigid to or part of said supporting member, a coiled spring surrounding said shaft between said flanges, a pocket in said shaft, a bracket rigid to said supporting member, a pair of complementary arms pivoted to said bracket, and a member projecting from said arms and engaging said pocket, and means attached to the ends of said arms.

Signed at New York, in the'county of New 7 York and State of New York, this 9th day of Aug, A. D. 1919.

HENRY FERESTER. 

